Device for closing bottom doors of vertical coking chambers or vertical retorts in coke ovens and the like



Apnl 29, 1924. 1.492.399

J." SCHAFER DEVICE FOR vCLOSING BOTTOM DOORS OF VERTICAL COKING CHAMBERS.OR VERTICAL RETORTS IN COKE OVENS AND THE LIKE Filed Nov. 1l. 1920flarnejl.

yPatented pr.. 29, 11924.

narran saar-ns Meana Josnr scHrnn, or DORTMUND, isfnitrvi'aiw.` e

nnvror. non cnosrne BOTTOM noon-s or VERTICAL comme enna/mirasonfvnnrican i nnron'rs in conn ovens ann annalisa,"

Applicationrled November 11, 19,20. Serial No. 423,479.

10 all 'whom t may Coface/vra:

Be it known that l, JOSEF SOHFER, a citizen of Germany, and a residentor Dortmund, in the Republic 'of Prussia, Germany, have invented certainnew and use-lul Imrovements in Devices yfor Closing Bottoni oors ofVertical Coking Chambers or Vertical Retorts in Coke Ovens and the like,of which the following is a specification.

ln' vertical cokingechambers or vertical retorts, as employed in themanufacture or gas, the bottom-doors are usually closed by hand afterthe'coke has been delivered into the cokequenchingwagon. This operationis, however, incommodious and unhealthy on account of the development of`gases and of the influence of the heat. To avoid these drawbacks and toclose the bottom-doors of the coking-chambers conveniently and asquickly as possible, separately operative mechanical lifting-deviceshave hithertobeen employed, but for all that it was an absolutenecessity tol perfect the closing of said doors by means of a iinal anddextrous use of the hand.

This inconvenience I avoid by means of my present invention, yaccordingto which the coke-quenching-wagon is provided with a standard projectingover the normal-profile of said wagon to such' an extent that onstarting this wagon after having received the contents of acoking-chamber, said standard will strike against a projecting member ofsaid hottom-door and swing it into its closing-position wherein it isantomatically locked. To accomplish this with ease said member of thebottom-door is provided with a pressure-roller adapted to contact withan upwardly and rearwardly projecting contact-arm of said standard,which is slidingly arranged at the rear-end of said wagon and yieldinglysupported thereon by a spring in the direction of pressure.

In the accompanying drawing my present invention is illustrated by wayor example as applied to a vertical coking-chamber of a coke-oven.

The discharge-opening of the vertical coking-chamber or retort 1 isfaced by a rigid frame 2 which simultaneously serves as a seat for thebottom-door 3 hinged to a bracket 4. The latter is shown as bolted to anadjacent I-beam 5, but might, of course, form an integral part of saidframe 2, if so desired. When the newly produced coke is ready to" bewithdrawn lromthe coking-- chamber or retort the 'coke-quenching-wagon 6is pushed beneath ity and then the lockingcam retaining said bottoin'door.in its clos-4 ing-position is retracted by rotating the"counter'weighted shaft v8. yThe bottom-door thus released will yswingdownwardy into" its hanging position (indicated by dotted lilies)closed, which iskaccomplished by 'means ofk my present inventionautomatically in the 70 l following manner :-y

At the rear-end of the coke-quenchingLv wagon 6 brackets 9 are providedfor the reception vora standard 10terminating in an upwardly `andrearwardly inclined contacltf arm 11 strengthened by a diagonally ar-v`ranged brace 12. The standard l0 is vertically supported by a spring 13ymounted upon an kextension'l'cgof the wagon-frame 15;

ard to yield when itfencounters a greater re-` sistance thanlthedeterminable pressurek reL quired to simplyraisethe bottomdoor toits otthe' ybottom-door 3, y-comes into Contact* 'This spring is providedtoallow the stand-"` with the 'standard 10 at the basefof rthe kneer f18, whereupon the bottom-door will he swung toward the right andsimultaneously elevated. The roller 16 will hereby ride upon thetop-face of the contactarm 11 un-r til the bottom-door comes intocontact with its seat 19 on .the frame 2. Hitherto the resistance of thespring 13 was suiiicient to support the standard in its elevatedposition but at this moment said standard will conimence to be graduallypressed downward until the roller 16 has reached the highest point 2()or the contact-arm 11 (see dotted outline of the upper portion of saidstandard). During the latter part of the upward movement of thebottom-door 3 the nose 21 ost the latter pushed the locking-cam 7 asidewhereby the counter-weight 22 in consequence thereof was swung to theleft by means of the rock-shaft 8 carrying it. But at the moment thenose 21 slides over the top-point 23 of the locking-cam 7 thecounter-weight 22 will return this locking-cam to its normal. positionin which it is enabled to retain the bottom-door closed against theweight of the full charge of the cokingchamber. Thus the locking-cam 7attains its locking-position at about the time the roller 16 reaches thehighest point 2O of the contact-arm l1, so that at the moment whenl saidroller finally leaves said contact-arm, the bottom-door is securelylocked and will be retained in this position by the lockingcam 7 untilthe latter is intentionally retracted by rotating the shaft 8 anew. Itwill be observed that the upper-face 24: of the contact-arm 11 is shapedin such a manner that at any time duringpthe closing operation of thebottom-door that part of said arm 11 in effective contact with thepressureroller will formv at the point of contact a tangent to thisroller and thus' insure a quick and reliable closing of saidbottom-door.

I claim l. A device of the character described comprising in combinationwith a cokequenching-wagon and the bottom-door of a verticalcoking-chamber, a standard mounted vertically movable on said wagon andprojecting over the normal-profile of the latter, a pressure-rollercarried by said bottom-door, an inclined contact-arm carried by saidstandard and adapted to cooperate with said roller for closing saidbottom-door when said wagonl is set in motion after having received thecoked contents of said coking-chamber, and locking-means 1mountedadjacent said bottom-door and adapted to be pushed out of itslocking-position 'by said door while ascending, but to lock said doorautomatically after being closed by said contact-arm; substantially' asset forth.

2. A device of the character described, comprising combination with acoke- -quenching-wagon and the bottom-door of a vertical-coking-chamber,a standard projecting over said wagon, means on said wagon for slidinglyretaining said standard in a vertical position, a yielding membersustaining said standard on said wagon and adapted to permit adepression of said standard when encountering undue resistance, acontact-roller mounted on said bottom-door, an upwardly and rearwardlyinclined contact-arm on said standard adapted to operate saidpressure-roller for closing said bottom-door when said wagon is advancedafter having received the coked contents of said colring-chamber; anoscillating locking-means journaled adjacent said bottom-door andadapted to be swung out of its locking-position by said door whenascending and to return automatically into its locking-position whilesaid bottom-door is still being pressed against its seat, substantiallyas set forth.

3. A device of the character described, comprising in combination with acokequenching-Wagon and the bottom-door of a vertical @cking-chamber, astandard mounted on said Wagon to yield in a vertical direction of thepressure, ak spring arranged on said wagon and sustaining said standard,a pressure roller carried by said bottom-door,

an inclined contact-arm carried by saidstandard and adapted to alwayspresent `a n

